<template>
  <view class="my-settle-container">
    <!-- 全选 -->
    <label class="radio" @click="changeAllState">
      <radio color="#C00000" :checked="isFullCheck" /><text>全选</text>
    </label>
    <!-- 合计 -->
    <view class="amount-box">
      合计:<text class="amount">￥{{checkedGoodsAmount}}</text>
    </view>
    <!-- 结算 -->
    <view class="btn-settle" @click="settlement">结算({{checkedCount}})</view>
  </view>
</template>
<script>
  import {mapGetters,mapMutations,mapState} from 'vuex'
export default {
  data() {
    return {
      seconds:3,
      timer:null
    };
  },
  computed:{
    ...mapGetters('m_cart',['checkedCount','total','checkedGoodsAmount']),
    ...mapGetters('m_user', ['addstr']),
    ...mapState('m_user', ['token']),
    ...mapState('m_cart',['cart']),
    isFullCheck() {
      return this.total === this.checkedCount
    }
  },
  methods:{
    ...mapMutations('m_cart', ['updateAllGoodsState']),
    ...mapMutations('m_user',['updateRedirectInfo']),
    changeAllState() {
      // 修改购物车中所有商品的选中状态
      // !this.isFullCheck 表示：当前全选按钮的状态取反之后，就是最新的勾选状态
      this.updateAllGoodsState(!this.isFullCheck)
    },
    // 点击了结算按钮
    settlement() {
      // 1. 先判断是否勾选了要结算的商品
      if (!this.checkedCount) return uni.$showMsg('请选择要结算的商品！')
    
      // 2. 再判断用户是否选择了收货地址
      if (!this.addstr) return uni.$showMsg('请选择收货地址！')
    
      // 3. 最后判断用户是否登录了
      // if (!this.token) return uni.$showMsg('请先登录！')
      if (!this.token) return this.delayNavigate()
      this.payOrder()
    },
    // 微信支付
    async payOrder() {
      // 1. 创建订单
      // 1.1 组织订单的信息对象
      const orderInfo = {
        // 开发期间，注释掉真实的订单价格，
        // order_price: this.checkedGoodsAmount,
        // 写死订单总价为 1 分钱
        order_price: 0.01,
        consignee_addr: this.addstr,
        goods: this.cart.filter(x => x.goods_state).map(x => ({ 
          goods_id: x.goods_id, 
          goods_number: x.goods_count, 
          goods_price: x.goods_price
        }))
      }
      // 1.2 发起请求创建订单
      const { data: res } = await uni.$http.post('/api/public/v1/my/orders/create', orderInfo)
      if (res.meta.status !== 200) return uni.$showMsg('创建订单失败！')
      // 1.3 得到服务器响应的“订单编号”
      const orderNumber = res.message.order_number
    
       // 2. 订单预支付
      // 2.1 发起请求获取订单的支付信息
        const { data: res2 } = await uni.$http.post('/api/public/v1/my/orders/req_unifiedorder', { order_number: orderNumber })
        // 2.2 预付订单生成失败
        if (res2.meta.status !== 200) return uni.$showError('预付订单生成失败！')
        // 2.3 得到订单支付相关的必要参数
        const payInfo = res2.message.pay
       // 3. 发起微信支付
       // 3.1 调用 uni.requestPayment() 发起微信支付
          const [err, succ] = await uni.requestPayment(payInfo)
          // 3.2 未完成支付
          if (err) return uni.$showMsg('订单未支付！')
          // 3.3 完成了支付，进一步查询支付的结果
          const { data: res3 } = await uni.$http.post('/api/public/v1/my/orders/chkOrder', { order_number: orderNumber })
          // 3.4 检测到订单未支付
          if (res3.meta.status !== 200) return uni.$showMsg('订单未支付！')
          // 3.5 检测到订单支付完成
          uni.showToast({
            title: '支付完成！',
            icon: 'success'
          })
     },
    delayNavigate(){
      this.seconds=3
      this.showTips(this.seconds)
      setInterval(()=>{
        this.seconds--
        if(this.seconds<=0){
          clearInterval(this.timer)
          uni.switchTab({
            url:'/pages/my/my',
            success: () => {
              this.updateRedirectInfo({
                openType:'switchTab',
                from:'/pages/cart/cart'
              })
            }
          })
          return
        }
        this.showTips(this.seconds)
      },1000)
    },
    showTips(n){
      uni.showToast({
        icon:'none',
        title:'请登陆后再结算！'+n+'秒之后自动跳转到登录页',
        mask:true,
        duration:1500
      })
    }
  }
}
</script>
<style lang="scss">
.my-settle-container {
  /* 底部固定定位 */
  position: fixed;
  bottom: 0;
  left: 0;
  /* 设置宽高和背景色 */
  width: 100%;
  height: 50px;
  background-color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-left: 5px;
    font-size: 14px;
  
    .radio {
      display: flex;
      align-items: center;
    }
  
    .amount {
      color: #c00000;
    }
  
    .btn-settle {
      height: 50px;
      min-width: 100px;
      background-color: #c00000;
      color: white;
      line-height: 50px;
      text-align: center;
      padding: 0 10px;
    }
}
</style>
